Design method of mechanical seal for vehicle-mounted fire pump for controlling dry friction temperature rise

A mechanical seal design method for a vehicle-mounted fire pump for controlling dry friction temperature rise relates to the technical field of mechanical seals, and adopts the technical scheme that the method comprises the following steps: step 1, determining temperature rise influence factors of a friction pair; 2, the sealing failure temperature of the friction pair is determined according to the temperature rise influence factors; and 3, the pressure and geometric parameters of the elastic element are adjusted till the safe operation temperature of the friction pair is smaller than the sealing failure temperature. Under the condition that an existing formula calculation result is not matched with temperature rise test data, the temperature rise influence factors are adjusted after the sealing failure temperature is determined, the problem of sealing failure caused by deformation due to contact between a friction pair and normal-temperature liquid after dry friction temperature rise can be solved, and it i